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Plate Tectonic Vocab
Terms in this set (26)
Stress that occurs when forces act to squeeze an object.
The body of molten that feeds a volcano.
Stress that occurs when forces act to stretch an object.
A break in a body of rock along which one block slides relative to another.
The boundary between tectonic plates that are sliding past each other horizontally.
The bending, tilting, and breaking of the Earth's crust; the change in the shape of rock in response to stress.
Solid, dense center of our planet that extends from the bottom of the outer core, to the center of the Earth, which is about 6,380 km beneath the surface.
At mid-ocean ridges, the ocean lithosphere is higher that it is where it sinks into the asthenosphere because of the (blank), the oceanic lithosphere slides downhill under the force of gravity.
An area of deep cracks that forms between two tectonic plates that are pulling away from each other.
The boundary formed by the collision of two lithosphere plates.
An opening at the surface of the Earth through which volcanic material passes.
The sudden return of elastically deformed rock to it's undeformed shape.
The boundary between two tectonic plates that are moving away from each other.
The layer of the Earth that extends from below the mantle to the center of the Earth is the (blank)
The earth's core is divided into two parts the outer core and the inner core. The outer core is the liquid layer of the Earth's core that lies beneath the mantle and surrounds the inner core.
Hot rock from deep within the Earth rises, but cooler rock near the surface sinks. (blank) causes the oceanic lithosphere to move sideways and away from the mid ocean ridge.
Is a plastic layer of the mantle on which pieces of the lithosphere move. It is made of solid rock that flows very slowly.
The theory that explains how large pieces of the Earth's outermost layer, called (blank), moves and change shape.
The outermost layer of the earth's crust.
The layer of earth between the crust and the core.
A vent or fissure in the Earth's surface through which magma and gases are expelled.
Because oceanic lithosphere is denser than the asthenosphere, the edge of the tectonic plate that contains oceanic lithosphere sinks and pulls the rest of the tectonic plate with it in a process called (blank)
The bending of rock layer due to stress.
The rising crust of regions for the Earth's crust to higher elevations.
The outermost, rigid layer of the Earth is the (blank) the (blank) is made of two parts the curst an the rigid upper part of the antle. The lithosphere is divided into pieces called tectonic plates.
Beneath the asthenosphere is the strong, lower part of the mantle.
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